Radiation refrigeration temperature control effect testing device capable of simulating various climates and testing method

Abstract

The invention provides a radiation refrigeration temperature control effect testing device capable of simulating various climates and a testing method, and belongs to the technical field of radiation refrigeration. The invention aims to solve the problems of single climate simulation, low sample testing efficiency and data dependence on manual processing in the existing device. The device comprises a container, a radiation refrigeration test system, a climate simulation assembly and a control and display system, the container is provided with a rectangular cavity as a climate simulation cabin, and a radiation refrigeration test system and a climate simulation assembly are arranged in the container; the control and display system comprises a meteorological monitor and a central processing unit, the meteorological monitor is placed in the center of the bottom of the container, and a touch screen is arranged on the central processing unit and placed on the outer side of the container. According to the invention, the problems of single climate simulation, low sample testing efficiency and dependence on manual data processing in the existing device are effectively solved, the efficiency and accuracy of radiation refrigeration material testing are improved, and comprehensive and accurate testing and comparative analysis of the temperature control effect of the radiation refrigeration material in different environments can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of radiative cooling, and particularly to a radiative cooling temperature control effect testing device and testing method capable of simulating multiple climates. Background Art

[0002] With the intensification of global warming and energy crisis, the development of efficient cooling technologies has become an urgent need of the international community. Radiative cooling technology, with its unique mechanism of dissipating heat to outer space through infrared radiation, has significant advantages of energy conservation, environmental protection, and sustainable operation, showing broad application prospects in the fields of building energy conservation, thermal management of electronic devices, cooling of new energy equipment, etc. However, the actual performance of this technology highly depends on complex climate environments. The dynamic changes of environmental parameters such as temperature, humidity, wind speed, and solar irradiance will significantly affect the performance of radiative cooling materials. Therefore, constructing a test platform that can simulate multi-climate conditions and achieve accurate performance evaluation has become a key bottleneck in promoting the engineering application of radiative cooling technology.

[0003] There are multiple technical bottlenecks in current radiative cooling performance testing technologies: First, traditional testing devices generally adopt a single environmental parameter control mode, making it difficult to reproduce the scenario of multi-parameter coupling in the real atmosphere. For example, the performance of some radiative cooling materials significantly deteriorates under high temperature and high humidity conditions, while they perform excellently under low temperature and low humidity conditions, but existing devices cannot achieve dynamic switching of environmental parameters across climate zones within the same system. Second, insufficient device integration leads to low testing efficiency. Most devices adopt a combination mode of discrete instruments, suffering from problems such as bulky structure, cumbersome operation procedures, long calibration cycles, and lacking the function of parallel testing of multiple samples. Each single test can only complete the evaluation of a single sample, making it difficult to meet the high-throughput testing requirements in the material formulation screening stage. Third, existing devices cannot accurately capture the characteristics of temperature, humidity, and wind speed, further restricting the research and application of radiative cooling technology. For example, Chinese Patent Application CN202310804404.5 discloses an all-weather radiative cooling material radiant energy power testing device and its testing method, whose disadvantage is that it is only applicable to the monitoring function of external environmental parameters and cannot achieve temperature control effect testing and cooling power testing under specific environments. Chinese Patent Application CN202210950755.2 discloses a device and method for measuring the radiative cooling cooling power, whose disadvantage is that it only has the power testing function and does not consider that the intuitive effect of the application of radiative cooling effect is temperature comparison. Chinese Patent Application CN202010600538.1 discloses a device and system for measuring radiative cooling power, which cannot achieve comparative analysis among multiple samples and cannot achieve targeted evaluation testing under actual use climate environments.

[0004] In summary, there is an urgent need to design a device that can solve problems such as single climate simulation, low sample testing efficiency, and data relying on manual processing, and improve the efficiency and accuracy of radiative cooling material testing. Summary of the Invention

[0005] A brief overview of the present invention is given below to provide a basic understanding of certain aspects of the present invention. It should be understood that this overview is not an exhaustive overview of the present invention. It is not intended to identify the key or important parts of the present invention, nor is it intended to limit the scope of the present invention. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0006] In view of this, to solve the problems of single climate simulation, low sample testing efficiency, and data relying on manual processing in existing devices, the present invention provides a radiative cooling temperature control effect testing device and testing method that can simulate multiple climates.

[0007] Solution 1: A radiative cooling temperature control effect testing device that can simulate multiple climates, including a container, a radiative cooling test system, a climate simulation component, a control and display system, and a material to be tested;

[0008] The container has a rectangular cavity as a climate simulation chamber, a sealing cover plate is installed on the top of the container, and a radiative cooling test system and a climate simulation component are arranged inside the container;

[0009] The radiative cooling test system includes a heat insulation material, a metal heat conducting sheet, a temperature adjusting sheet, a temperature measuring element, and a multi-section adjustable bracket; a stepped groove is formed in the heat insulation material, the material to be tested, the metal heat conducting sheet, and the temperature adjusting sheet are placed in the stepped groove from top to bottom, and the upper surface of the material to be tested is exposed outside the stepped groove; the multi-section adjustable bracket is fixed at the bottom of the container, and the top passes through the heat insulation material and is connected to the temperature adjusting sheet, and a temperature measuring element is arranged between the material to be tested and the metal heat conducting sheet;

[0010] The climate simulation component includes a humidity conditioner, a refrigeration and heating integrated machine, a multi-stage adjustable wind speed machine, and an adjustable simulated solar lighting device; the humidity conditioner and the refrigeration and heating integrated machine are both installed on the inner side wall of the container, the multi-stage adjustable wind speed machine is installed on the outer side wall of the container and is connected to the inner cavity of the container through a pipeline, and the adjustable simulated solar lighting device is arranged above the container;

[0011] The control and display system includes a meteorological monitor and a central processor. The meteorological monitor is placed at the center position of the bottom of the container, and the central processor is placed outside the container and is communicatively connected to the meteorological monitor, the climate simulation component, the temperature adjusting sheet, and the temperature measuring element.

[0012] Furthermore, a rotary bearing is provided on the multi-section adjustable bracket, and the adjustment range is from 0° to 90°.

[0013] Furthermore, the material of the container is polystyrene foam.

[0014] Furthermore, the material of the sealing cover plate is an optical glass plate with a light transmittance greater than 90%.

[0015] Furthermore, the temperature adjustment range of the refrigeration and heating integrated machine is from -20°C to 60°C, the relative humidity adjustment range of the humidifier is from 10% to 90%, the wind speed adjustment range of the multi-stage adjustable wind speed machine is from 0.1 m / s to 10 m / s, and the light intensity range of the adjustable simulated solar light device is from 0 to 1000 W / m 2 .

[0016] Furthermore, four radiation cooling test systems are evenly distributed in a rectangular shape inside the container, and multiple groups of materials to be tested can be measured simultaneously.

[0017] Furthermore, the temperature adjustment piece is an intelligent temperature control type adjustment piece.

[0018] Furthermore, the central processing unit is equipped with a touch screen.

[0019] Solution 2: A method for testing the radiation cooling temperature control effect that can simulate multiple climates, which is realized relying on the radiation cooling temperature control effect test device that can simulate multiple climates described in Solution 1, and specifically includes the following steps:

[0020] S1. Check whether the communication between the central processing unit and the meteorological monitor, climate simulation component, temperature adjustment piece, and temperature measurement element is normal;

[0021] S2. Place the material to be tested on the metal heat conduction piece, adjust the multi-section adjustable bracket to simulate the actual terrain conditions, and cover the sealing cover plate after adjustment;

[0022] S3. Set the parameters of the humidifier, refrigeration and heating integrated machine, multi-stage adjustable wind speed machine, and adjustable simulated solar light device through the central processing unit, simulate the climate of the actual area, and start the test;

[0023] S4. During the test, the meteorological monitor monitors the temperature, humidity, wind speed, and solar light intensity of the environment in real time and feeds them back to the central processing unit. The temperature curve and environmental parameters are displayed on the touch screen of the central processing unit in real time. When the environmental temperature, humidity, wind speed, and solar light intensity are different from the preset values, the central processing unit will automatically adjust the climate simulation component to keep the climate conditions always at the preset values. When an abnormal situation occurs, the central processing unit will generate an alarm;

[0024] S5. During the process of measuring the radiative cooling power, the temperature measuring element transmits the temperature data of the material to be measured to the central processing unit in real time. When the temperature of the material to be measured is different from the preset temperature value, the central processing unit can autonomously adjust the output power of the temperature regulating sheet to keep the temperature of the material to be measured constantly at the preset temperature;

[0025] S6. After the test is completed, the central processing unit uses multiple data transmission modules to connect to the PLC for regulation and control, and can automatically generate a comparative analysis report, including text, data, charts and comparison results, and export the data.

[0026] The present invention has the following beneficial effects compared with the prior art:

[0027] 1. The device of the present invention can flexibly adjust the temperature (-20°C - 60°C), humidity (10% - 90%), wind speed (0.1 - 10m / s), and light intensity (0 - 1000W / m 2 ), covering typical climate conditions such as high temperature and high humidity in the tropics, low temperature and low humidity in the polar regions, dry and strong light in the desert, and variable wind speed in the temperate zone, realizing multi-environment simulation;

[0028] 2. The device of the present invention simulates different terrains in different regions through a multi-section adjustable angle bracket with a rotating bearing, so that the material to be tested is under different lighting angles, which is more in line with the actual application scenario;

[0029] 3. The device of the present invention can set different test modes, such as single-condition test, multi-condition cyclic test, etc. By comparing the temperature control performance of different samples under the same climate conditions, analyze their cooling efficiency, stability and adaptability;

[0030] 4. The device of the present invention supports synchronous testing of multiple groups of samples, and can compare key indicators such as radiative cooling power, temperature control effect, and stability of samples in real time under the same or different climate conditions;

[0031] 5. The device of the present invention can easily set combined conditions such as temperature, humidity, wind speed, and light intensity through the central processing unit, without complex debugging. During the test process, the temperature curve and environmental parameters are displayed in real time, and abnormal situations are automatically warned, reducing the usage threshold of the device while making the test data more stable, reproducible, and with lower data errors;

[0032] 6. The device of the present invention has a compact structure, supports data export and visual analysis, and is convenient for users to further research and optimize. Description of the Drawings

[0033] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the drawings:

[0034] Figure 1It is a schematic structural diagram of a radiation cooling temperature control effect test device that can simulate multiple climates;

[0035] Figure 2 It is Figure 1 the top view of;

[0036] Figure 3 It is Figure 1 the enlarged view of part A in;

[0037] In the figure: 10 - container, 11 - sealing cover plate, 20 - radiation cooling test system, 21 - heat insulation material, 22 - metal heat conducting sheet, 23 - temperature adjusting sheet, 24 - temperature measuring element, 30 - humidity conditioner, 31 - refrigeration and heating integrated machine, 32 - multi - stage adjustable air velocity machine, 33 - adjustable simulated solar illumination device, 40 - meteorological monitor, 50 - central processing unit, 60 - multi - joint adjustable bracket, 61 - rotating bearing, 70 - material to be tested. Specific implementation mode

[0038] In order to make the technical solutions and advantages in the embodiments of the present invention clearer, the following further elaborates on the exemplary embodiments of the present invention with reference to the attached drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0039] Embodiment 1. Refer to Figures 1-3 to illustrate the implementation mode of this embodiment. A radiation cooling temperature control effect test device that can simulate multiple climates includes a container 10, a radiation cooling test system 20, a climate simulation component, a control and display system, and a material to be tested 70;

[0040] The container 10 has a rectangular cavity as a climate simulation chamber. A sealing cover plate 11 is installed on the top of the container 10, and a radiation cooling test system 20 and a climate simulation component are arranged inside the container 10;

[0041] The radiation cooling test system 20 includes a heat insulation material 21, a metal heat conducting sheet 22, a temperature adjusting sheet 23, a temperature measuring element 24, and a multi - joint adjustable bracket 60; a stepped groove is formed on the heat insulation material 21. The material to be tested 70, the metal heat conducting sheet 22, and the temperature adjusting sheet 23 are placed in the stepped groove from top to bottom, and the upper surface of the material to be tested 70 is exposed outside the stepped groove; the multi - joint adjustable bracket 60 is fixed at the bottom of the container 10, and the top passes through the heat insulation material 21 and is connected to the temperature adjusting sheet 23. A temperature measuring element 24 is arranged between the material to be tested 70 and the metal heat conducting sheet 22;

[0042] The climate simulation component includes a humidity conditioner 30, a refrigeration and heating integrated machine 31, a multi-stage adjustable wind speed machine 32, and an adjustable simulated sunlight device 33; the humidity conditioner 30 and the refrigeration and heating integrated machine 31 are both installed on the inner side wall of the container 10, the multi-stage adjustable wind speed machine 32 is installed on the outer side wall of the container 10 and is connected to the inner cavity of the container 10 through a pipeline, and the adjustable simulated sunlight device 33 is arranged above the container 10;

[0043] The control and display system includes a meteorological monitor 40 and a central processor 50. The meteorological monitor 40 is placed at the center of the bottom of the container 10, and the central processor 50 is placed outside the container 10 and is communicatively connected to the meteorological monitor 40, the climate simulation component, the temperature regulating sheet 23, and the temperature measuring element 24.

[0044] Further, a rotary bearing 61 is provided on the multi-section adjustable bracket 60, and the adjustment range is from 0° to 90°.

[0045] Further, the material of the container 10 is polystyrene foam.

[0046] Further, the material of the sealing cover plate 11 is an optical glass plate with a light transmittance greater than 90%.

[0047] Further, the temperature adjustment range of the refrigeration and heating integrated machine 31 is from -20°C to 60°C, the relative humidity adjustment range of the humidity conditioner 30 is from 10% to 90%, the wind speed adjustment range of the multi-stage adjustable wind speed machine 32 is from 0.1 m / s to 10 m / s, and the light intensity range of the adjustable simulated sunlight device 33 is from 0 to 1000 W / m 2 。

[0048] Further, four radiation cooling test systems 20 are evenly distributed in a rectangular shape inside the container 10, and multiple groups of materials to be tested 70 can be measured simultaneously.

[0049] Further, the meteorological monitor 40 can monitor the temperature on the surface of the material to be tested 70 and the temperature, humidity, wind speed, and solar light intensity of the environment in real time.

[0050] Further, the temperature regulating sheet 23 is an intelligent temperature-controlled regulating sheet, which can heat or cool according to the temperature of the material to be tested 70, so that the temperature of the material to be tested 70 is always maintained at the set temperature.

[0051] Further, the central processor 50 is provided with a touch screen.

[0052] Further, the material of the heat insulation material 21 is rock wool.

[0053] Embodiment 2. A test method for the radiative cooling temperature control effect that can simulate multiple climates is realized based on the test device for the radiative cooling temperature control effect that can simulate multiple climates described in Embodiment 1, and specifically includes the following steps:

[0054] S1. Check whether the communication between the central processor 50 and the meteorological monitor 40, the climate simulation component, the temperature regulating sheet 23, and the temperature measuring element 24 is normal;

[0055] S2. Place the material to be tested 70 on the metal heat conducting sheet 22, adjust the multi-section adjustable bracket 60 to simulate the actual terrain conditions, and cover the sealing cover plate 11 after the adjustment is completed;

[0056] S3. Set the parameters of the humidity conditioner 30, the refrigeration and heating integrated machine 31, the multi-stage adjustable wind speed machine 32, and the adjustable simulated solar light device 33 through the central processor 50, simulate the climate of the actual area, and start the test;

[0057] S4. During the test, the meteorological monitor 40 monitors the temperature, humidity, wind speed, and solar light intensity of the environment in real time and feeds them back to the central processor 50. The temperature curve and environmental parameters are displayed on the touch screen of the central processor 50 in real time. When the environmental temperature, humidity, wind speed, and solar light intensity are different from the preset values, the central processor 50 will automatically adjust the climate simulation component to keep the climate conditions always at the preset values. When an abnormal situation occurs, the central processor 50 will generate an alarm;

[0058] S5. During the process of testing the radiative cooling power, the temperature measuring element 24 transmits the temperature data of the material to be tested 70 to the central processor 50 in real time. When the temperature of the material to be tested 70 is different from the preset temperature value, the central processor 50 can independently adjust the output power of the temperature regulating sheet 23 to keep the temperature of the material to be tested 70 always constant at the preset temperature;

[0059] During the test, the heat output of the material to be tested 70 is compensated by the output power of the temperature regulating sheet 23 to keep the material to be tested 70 at a constant temperature. Therefore, the radiative cooling power of the material to be tested 70 is equal to the output power of the temperature regulating sheet 23; According to the law of conservation of energy, the power of the temperature regulating sheet 23 is the radiative cooling power of the material to be tested 70, and the calculation formula is P heater =P rad -P atm -P solar ;

[0060] Among them, P rad represents the total energy radiated by the material to be tested 70, P atm represents the energy of the atmospheric radiation absorbed by the material to be tested 70, and P solar represents the energy of the sunlight absorbed by the material to be tested 70 under the irradiation of sunlight;

[0061] S6. The test is completed. The central processing unit 50 uses multiple data transmission modules to connect to the PLC for regulation, and can automatically generate a comparative analysis report, including text, data, charts, and comparison results, and export the data.

[0062] Through the present invention, it is possible to comprehensively and accurately test and comparatively analyze the temperature control effects of radiative cooling materials or devices under different environments; various complex climate conditions from the frigid zone to the tropical zone can be flexibly simulated by adjusting the climate simulation component; at the same time, multiple sample test modules are provided in the device, supporting parallel testing of multiple samples, significantly improving the test efficiency and accuracy.

[0063] Through the present invention, the threshold for using the test device for radiative cooling materials is reduced. The central processing unit can easily set combined conditions such as temperature, humidity, wind speed, and light without complex debugging; during the test process, the central processing unit displays the temperature curve and environmental parameters in real time, and automatically warns of abnormal situations, making the test data more stable, and various parameters can be reproduced, reducing experimental data errors.

[0064] Although the present invention has been described based on a limited number of embodiments, those skilled in the art in this technical field will understand, based on the above description, that other embodiments can be envisioned within the scope of the present invention thus described. In addition, it should be noted that the language used in this specification is mainly selected for readability and teaching purposes, rather than for the purpose of explaining or limiting the subject matter of the present invention. Therefore, many modifications and changes are obvious to those of ordinary skill in this technical field without departing from the scope and spirit of the appended claims. For the scope of the present invention, the disclosure of the present invention is illustrative, not restrictive, and the scope of the present invention is defined by the appended claims.

Claims

1. A radiation cooling temperature control effect testing device capable of simulating a variety of climates, characterized in that: It comprises a container (10), a radiation cooling test system (20), a climate simulation component, a control and display system and a material to be tested (70); The container (10) has a rectangular cavity as a climate simulation cabin, a sealing cover plate (11) is installed on the top of the container (10), and a radiation cooling test system (20) and a climate simulation component are arranged in the container (10); The radiation cooling test system (20) comprises a heat-insulating material (21), a metal heat-conducting sheet (22), a temperature regulating sheet (23), a temperature measuring element (24) and a multi-section adjustable bracket (60); the heat-insulating material (21) is provided with a stepped groove, the material to be tested (70), the metal heat-conducting sheet (22) and the temperature regulating sheet (23) are placed in the stepped groove from top to bottom, and the upper surface of the material to be tested (70) is exposed outside the stepped groove; the multi-section adjustable bracket (60) is fixed to the bottom of the container (10), and the top passes through the heat-insulating material (21) and is connected to the temperature regulating sheet (23); a temperature measuring element (24) is provided between the material to be tested (70) and the metal heat-conducting sheet (22); The climate simulation component comprises a humidifier (30), a cooling and heating integrated machine (31), a multi-stage adjustable wind speed machine (32) and an adjustable simulated sunlight device (33); the humidifier (30) and the cooling and heating integrated machine (31) are both installed on the inner wall of the container (10), the multi-stage adjustable wind speed machine (32) is installed on the outer wall of the container (10) and connected to the inner cavity of the container (10) through a pipeline, and the adjustable simulated sunlight device (33) is arranged above the container (10); The control and display system comprises a meteorological monitor (40) and a central processing unit (50), wherein the meteorological monitor (40) is placed at the center of the bottom of the container (10), and the central processing unit (50) is placed outside the container (10) and is communicatively connected with the meteorological monitor (40), the climate simulation component, the temperature regulating sheet (23) and the temperature measuring element (24).

2. A radiant cooling temperature control effect testing device capable of simulating various climates according to claim 1, characterized in that: The multi-section adjustable bracket (60) is provided with a rotary bearing (61) with an adjustment range of 0° to 90°.

3. A radiant cooling temperature control effect testing device capable of simulating various climates according to claim 1, characterized in that: The material of the container (10) is polystyrene foam.

4. A radiant cooling temperature control effect testing device capable of simulating various climates according to claim 1, characterized in that: The sealing cover plate (11) is made of an optical glass plate with a light transmittance greater than 90%.

5. A radiant cooling temperature control effect testing device capable of simulating various climates according to claim 1, characterized in that: The temperature adjustment range of the integrated cooling and heating machine (31) is -20°C to 60°C, the relative humidity adjustment range of the humidifier (30) is 10% to 90%, the wind speed adjustment range of the multi-stage adjustable wind speed machine (32) is 0.1m / s to 10m / s, and the light intensity range of the adjustable simulated sunlight illumination device (33) is 0 to 1000W / m 2 .

6. The radiant cooling temperature control effect testing device capable of simulating various climates according to claim 1, characterized in that: The container (10) has four radiation cooling test systems (20) evenly distributed in a rectangular shape, and can measure multiple groups of materials to be tested (70) at the same time.

7. The radiant cooling temperature control effect testing device capable of simulating various climates according to claim 1, characterized in that: The central processor (50) is provided with a touch screen.

8. The radiant cooling temperature control effect testing device capable of simulating various climates according to claim 1, characterized in that: The temperature regulating piece (23) is an intelligent temperature control regulating piece.

9. A method for testing the radiant cooling temperature control effect testing device capable of simulating multiple climates as claimed in claim 1, characterized in that: The specific steps include: S1. Check whether the communication between the central processor (50) and the weather monitor (40), the climate simulation component, the temperature regulating piece (23) and the temperature measuring element (24) is normal; S2. Place the material to be tested (70) on the metal heat conductive sheet (22), adjust the multi-section adjustable bracket (60) to simulate the actual terrain conditions, and cover the sealing cover (11) after the adjustment is completed; S3. The parameters of the humidity control machine (30), the cooling and heating machine (31), the multi-level adjustable wind speed machine (32) and the adjustable simulated sunlight device (33) are set by the central processor (50) to simulate the actual regional climate and start the test; S4. During the test, the weather monitor (40) monitors the temperature, humidity, wind speed and sunlight intensity of the environment in real time and feeds back to the central processor (50). The temperature curve and environmental parameters are displayed in real time on the touch screen of the central processor (50). When the ambient temperature, humidity, wind speed and sunlight intensity are different from the preset values, the central processor (50) will automatically adjust the climate simulation components to keep the climate conditions at the preset values. When an abnormal situation occurs, the central processor (50) will generate an alarm; S5. During the radiation cooling power test, the temperature measuring element (24) transmits the temperature data of the material to be tested (70) to the central processor (50) in real time. When the temperature of the material to be tested (70) is different from the preset temperature value, the central processor (50) can autonomously adjust the output power of the temperature regulating plate (23) so that the temperature of the material to be tested (70) is always constant at the preset temperature; S6. After the test is completed, the central processor (50) uses multiple data transmission modules to connect to the PLC for regulation, and can automatically generate a comparative analysis report including text, data, charts and comparison results and export data.

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